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Old World was Lunar. Most early civilisations have a Dee Block Race Car Cup Champion 2023 logo shirt based calendar because it was so much easier to plot and make sense of time. It is not just China, even Scotland mesolithic era (8000 BC), in Hindu, in Islam and possibly most lost civilisations. Chinese have the lunar calendar since ancient times, and delineate as 60 years cycle. And used 12 years Zodiac and created very sophisticated system, numerology, astrological concepts around it. Almost all East Asia adopted Chinese approach, so they have in effect a common calendar and fortunately they followed China so it was so much easier for all to co-exist in synergy. Much like the whole of Europe logically followed Rome. Solar. A few like Japan after modernisation dropped lunar and adopted Western solar calendar, the Gregorian. Most Japanese don’t celebrate lunar new year anymore. For some traditional and religious festivals and rituals, I believe lunar calendar may still be referred, certainly for Buddhist rituals. Likewise Gregorian is the universal standard for the whole world and all in Asia to interact and run all the world affairs, work and business.
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A Weed Is A Gateway Drug Shirt – though somewhat indirect and subtle – method used for stars that do not fit into these categories (which is the majority of them, at least in our own galaxy) is as follows: First deduce the likely temperature and size of the star from its dominant colour and the atomic spectra present in its light (temperature is related to colour, and different chemical elements are produced under different conditions of temperature and pressure, which in turn depend on the mass and age of a star). From these we can work out the likely luminosity. From the luminosity we can deduce the stars absolute magnitude [1] (i.e. how bright it would appear at a standard, fixed distance of 10 parsecs from us). Comparing this with the star’s apparent (i.e observed) magnitude, we can then calculate it’s actual distance from us. To me, this method of deducing a star’s distance from us merely by studying its light, and then doing a few calculations based on thermodynamics, nuclear physics, atomic physics and stellar dynamics, represents one of the most beautiful examples of the power of human ingenuity and careful, deductive reasoning in the history of science.
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